<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    p{
        color: red;
        /* 这是注释 */
    }
</style>
<body>
    <p>hello world</p>
    <h1 style="color: blue; font-size: 80px;">你好</h1>
</body>
</html>